289326641 has 2 divisors, whose sum is σ = 289326642. Its totient is φ = 289326640.

The previous prime is 289326613. The next prime is 289326673. The reversal of 289326641 is 146623982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185368225 + 103958416 = 13615^2 + 10196^2 .

It is a cyclic number.

It is not a de Polignac number, because 289326641 - 2¹⁸ = 289064497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (289326041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144663320 + 144663321.

It is an arithmetic number, because the mean of its divisors is an integer number (144663321).

Almost surely, 2^289326641 is an apocalyptic number.

It is an amenable number.

289326641 is a deficient number, since it is larger than the sum of its proper divisors (1).

289326641 is an equidigital number, since it uses as much as digits as its factorization.

289326641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 289326641 is about 17009.6043751758. The cubic root of 289326641 is about 661.3978949571.

The spelling of 289326641 in words is "two hundred eighty-nine million, three hundred twenty-six thousand, six hundred forty-one".